MIB-50 Manual Inspection Booth

The MIB-50™ is a Dual Side lighted inspection booth designed for Bench Top operation.  The Manual Inspection Booth (MIB-50™) in Standard Configuration is shown in Figure below. The MIB-50™ is designed to provide a uniform illumination work envelope and consistent inspection environment in a volume small enough to place on a table of laboratory counter top. The framework of the MIB-100™ is ergonomically designed and implements a recently patented balanced lighting system that generates a 8 Liter inspection volume in which light intensity is held within 10%, thus eliminating a major component for inspection data variability.  This large accurate inspection volume allows the inspector to easily position samples in the chamber.

MIB-50 Manual Inspection Booth for space limited projects.

MIB-50 without SS Armrest

The MIB-50™ implements a Patented parallel lighting system similar to the MIB-100™ except that the lamps are oriented vertically rather than horizontally.  The uniform lighting volume is produced by high output Biax lamps that use a folded optical path to increase the distance between lamps.  The lamps are actually mounted behind the Replaceable Inspection Screen (Black / White Background).  The enclosure is constructed of 14 gauge steel with a Gloss White exterior.  The Enclosure dimensions are 32.0″ (812 mm) W x 14″ (355 mm) D x 32.25″ (820 mm) H, weighting approximately 165 lbs. The MIB-50™ incorporates many of the features found in the MIB-100 but in a smaller package.  The unique Phoenix Imaging Power Supplies (two of them) are mounted in the upper section of the main enclosure.  The high frequency power supplies operate at 50 KHz and have active-loop feedback control to maintain precise luminous flux.  The power supplies insure balanced lamp output over the entire range of control.  There is a potentiometer mounted on the front of the enclosure that allows precision adjustment of the lighting level.  In conjunction with the novel lamp separation adjustment the light intensity of the system can be adjusted between 200 and 700 foot-candles in the inspection volume.  Higher lamp output is available but the uniformity in the inspection volume will not be ±5% from the center point.  Figure 2 above illustrates the lighting path in the MIB-50™.  In addition to the electronic light intensity adjustment the MIB-50 also allows the lamps to be positioned either closer of further from the centerline of the inspection zone.  Move the lamps closer to the centerline and the intensity increases, and vice versa.

MIB-50 Adjustable Light Path provides an method of inspection intensity

Phoenix Imaging MIB-50 Light Path Diagram

The MIB-50™ Light Path is a folded mirror design that helps reduce the size of the inspection system without reducing the optical path length of the illumination sources.  This is important because the intensity changes as a function of distance from the light source.  As we move further from the lamps the change per unit of distance becomes less.  The design allows the user to easily reposition the lamps by simply sliding them toward or away from the center of the inspection volume.  In combination with the “Master Intensity Control” the MIB-50™ allows the light intensity level to be adjusted from 2000 Lux to 8000 Lux. The inspection background can be easily removed to provide access to the two pairs of Biax lamps when replacement is necessary.  The precision power supplies are balanced so that the light intensity is the same in front of the White and Black regions of the background. The MIB-50 uses a PLC interfaced to a touch screen display for control of many of the units functions, such as timers for inspector pacing, monitoring the stability of the power supplies, interface to audible and visual alarms and connection to footswitch.  Several operational modes can be selected from the operator interface including Indexed Inspections (user input after each step of inspection process), Continuous Inspection (user input after a complete inspection cycle), Data Collection Mode (tally inspection results or not), White / Black Inspection or Monochrome Inspection (18% Graycard or White Background Only), and many others.  There are timers for each step of the inspection cycle that the supervisor is allow change, this is very important for consistent inspection results.

Full brochure of the MIB-50™ product is available at this link: BROCHURE MIB-50 revision 2013-236